Bean Road Underpass

The Bean Road Underpass (also known during planning as the Bean Road Tunnel) is a major planned road and bus transit tunnel in Kent, England, that will link the new Whitecliffe/Eastern Quarry housing development to the Bluewater Shopping Centre.^[1] The 75-metre (246 ft) long tunnel will be constructed under the chalk ridge of the B255 “Bean Road” immediately north of Bluewater.^[2] It is designed to carry a dedicated Fastrack bus lane (3.5 metres (11 ft) wide) and an adjacent shared pedestrian/cycle path. Once built, it will form part of the Fastrack bus rapid-transit system serving Dartford and Gravesham, providing a direct public transport link between Ebbsfleet Garden City (Eastern Quarry/Whitecliffe) and Bluewater. Planning permission was granted on 6 March 2025 (after an earlier permission lapsed), and construction is slated to begin in early 2026 for completion in 2027. In January 2026 Kent County Council announced an £18 million construction contract award to Erith Contractors for the scheme.^[3]

The tunnel scheme has long been envisaged as part of the Fastrack rapid-transit network for Ebbsfleet Garden City. Fastrack was first identified in the late 1990s as critical infrastructure for Kent Thameside’s development.^[4] Henley Camland – the developer of Eastern Quarry (now branded Whitecliffe), a 667-acre housing site of about 6,250 homes – has built a central spine road through the site and planned to connect it to Bluewater.^[5] Two small tunnels, originally dug in the 1990s to move earth during Bluewater’s construction, already pass through the chalk ridge of Bean Road and were deemed suitable for reuse in the new tunnel connection.^[6]

In mid-2019 Kent County Council formally approved the project for progression.^[7] A full planning application (KCC/DA/0232/2019, sometimes called Proposal DA/19/1549) was submitted to Dartford Borough Council in late 2019.^[8] In May 2020 the Kent Planning Applications Committee resolved to grant permission (subject to conditions) for the tunnel and associated road works.^[9] Planning permission was formally issued on 24 June 2020.^[10] The approved scheme would have allowed construction to proceed by mid-2023, but that permission expired in June 2023 (three years after issue) without works commencing.^[11]

Following additional funding commitments, a renewed planning application was submitted in August 2024. The new application was approved on 6 March 2025.^[12] At that point, Kent County Council indicated that early design works (topographical and geotechnical surveys) were underway and that tenders for the main contract had been received. In December 2025, a joint transportation board report noted that preparatory surveys were due to start in early 2026 and main construction was expected to begin in spring 2026.^[13]

For context of the planned Bean Road underpass, Bluewater Shopping Centre (opened 1999) occupies the site of a former large chalk quarry (the “Western Quarry”).^[14] An adjacent pit (the Eastern Quarry, later known as Whitecliffe) lies just east of Bluewater, separated by the B255 Bean Road. During Bluewater’s construction in the mid-1990s, the developer Lend Lease excavated two large tunnels through the chalk ridge under Bean Road, linking the Western and Eastern quarries.^[15] These tunnels were specifically designed to carry construction traffic and materials between the pits during the earthworks phase.^[16]

According to official records, two haulage tunnels were cut “through the chalk spine supporting B255 Bean Road” to facilitate earthmoving during Bluewater’s construction in the mid-1990s. Kent planning documents note that the existing tunnels “provided a connection between Western and Eastern Quarry and … were used to transport material between the quarries”.^[17] Engineering accounts describe the bores as quite large – on the order of 8–9 metres across. For example, a 2000 industry report states that “9m diameter twin tunnels were bored beneath the [Bean Road]” to carry truck loads of sand from the Eastern Quarry to the Bluewater site.^[18] (An engineering consultant’s record similarly refers to two 7.5 m-span chalk tunnels driven in 1995–1996. In either description, the twin tunnels were big enough to admit haul trucks and heavy excavators. Construction notes indicate they were lined with sprayed concrete (the New Austrian Tunnelling Method) as they were driven through weak, jointed chalk.^[19][20]

Once completed, the haulage tunnels carried millions of cubic metres of material. Before any building work, about 3,000,000 m³ of Thanet sand (chalk) had to be removed from the Eastern Quarry and trucked across to Bluewater.^[21] Over roughly eight months, a fleet of six excavators and thirty 40‑tonne dump trucks ran continuously through the tunnels (at peak, one truck passed through about every 14 seconds).^[22] In sum this was one of the UK’s largest earth-moving contracts at the time.^[23] After the site was filled and compacted, and Bluewater’s foundations installed, the haulage tunnels were no longer needed for daily use.

Today the two haulage tunnels remain in place beneath Bean Road, but are essentially unused relics of the mall’s construction. A 2019 county council report explicitly notes that the original haulage tunnels from the Bluewater build “still exist” under Bean Road.^[24]

The project’s estimated total cost has grown substantially. Kent County Council reported an original 2018 budget of £13 million, rising to about £25.5 million by 2025 due to inflation and other cost increases, for example the war in Ukraine and cost of materials.^[25] Procurement documents list the project value at £25.5 million, with a construction cost budget of roughly £20.4 million.^[26] Funding has come from multiple sources. The Ebbsfleet Development Corporation (EDC) provided Garden City development grants for the tunnel, as part of its investments in local infrastructure.^[27] The Department for Transport’s Bus Service Improvement Plan (BSIP) tranche 2 allocated additional funding that helped unlock construction (enabling a late-2025/early-2026 start).^[28]

The new tunnel will bore through the chalk ridge that forms Bean Road (B255) immediately north of Bluewater. It will be about 75 m in length, spanning beneath the existing road.^[29] The plan reuses the two former 1990s haulage tunnels: the council intends to connect and adapt them into a single new underpass structure. Inside the tunnel, a single 3.5 metre-wide lane will carry Fastrack buses in one direction; a parallel shared footway/cycleway will be provided alongside the bus lane.^[30] (The tender documents describe the bus lane as “bi-directional,” suggesting it will carry buses in both directions, but other council sources refer to it as single-way.)

The northern end of the tunnel will tie into the new Eastern Quarry/Whitecliffe spine road, while the southern end emerges on land adjacent to Bluewater.^[31] The tunnel’s alignment avoids disturbing nearby properties and utilities; planning conditions require any drainage from the tunnel to be tied into water-management strategies for both the Bluewater and Eastern Quarry developments.^[32]

The primary purpose of the underpass is to give Fastrack bus services a direct, uncongested route between Bluewater and the Eastern Quarry housing area.^[33] Currently Fastrack buses must divert via the busy Bean Road junction or outlying roads; the tunnel will allow them to cut straight through the ridge and enter the Whitecliffe development without mixing with general traffic. Upon opening, Fastrack route E (a rebranded service from Gravesend) is planned to extend through the tunnel, connecting Ebbsfleet and Ashmere via Bluewater.^[34]

The planning approval came with extensive conditions to protect the local environment. The tunnel passes through chalk geology that underlies a water supply aquifer, so drilling must be carried out to avoid impacts on groundwater. For example, the council required that tunnelling “should be undertaken in a manner not likely to create impacts on the underlying chalk aquifer”.^[35] Ecological surveys identified protected species (bats, birds, etc.) and habitats in the area. Conditions include obtaining a European Protected Species mitigation licence and implementing measures to safeguard wildlife (such as timing construction to avoid breeding seasons, installing bat-sensitive lighting, and providing new habitat as needed).^[36] Additional conditions govern surface-water drainage and pollution control during construction.

Local consultations were held as part of the planning process. Stone Parish Council formally supported the tunnel proposal,^[37] and KCC planned further engagement with area residents and Bluewater management before works began.

In January 2026, Kent County Council announced that Erith Contractors had been selected for the main works under a £18.6m contract. Erith Contractors was chosen from five bidders.^[38] Early 2026 will be used for site investigations, detailed design finalization, and preparatory works. Main construction (including excavation of the tunnel, roadworks, and landscaping) is expected to begin in spring 2026.^[39] The council’s updated schedule targets completion in 2027.^[40] Upon completion, the existing haulage tunnels will be fully repurposed: one will become the vehicular passage for the busway, while the other will serve as an emergency/maintenance access or be otherwise fitted out.

• List of road projects in the UK
• Silvertown Tunnel, a new road tunnel, located close to the Blackwall Tunnel
• Lower Thames Crossing, a new planned road crossing tunnel, connecting Kent and Essex